Designjet Z Series — Service Manual 1-45
Troubleshooting Print Quality Problems
Print Scuffing or Scratching when Touched
Description of problem
The black ink pigment can smudge when touched by a finger, a pen, or
some other object. This is particularly noticeable on coated paper, matte
proofing paper, and fine art material.
Glossy paper may be extremely sensitive to damage from the basket or to
anything else that it contacts soon after printing, depending on the amount
of ink used and the environmental conditions at the time of printing.
Corrective Action
1 Handle prints carefully.
2 Avoid stacking prints on top of each other.
3 Disable the automatic cutter before printing, so that the print will not fall into
the basket Alternatively, leave a sheet of paper in the basket so that freshly
printed sheets do not make direct contact with the basket.
Marks on the Media
Marks on the paper can come in a variety of forms, including horizontal
smears, pinchwheel marks, starwheel marks, and ink marks on the back of
the paper.
Ink marks on the back of the paper
This can happen after a lot of border less printing, especially with non-
standard paper sizes. Also, loading media without skew check frequently
leads to printing on the platen. Ink residues on the platen are likely to mark
the back of the paper.
Corrective Action
Clean the platen with a soft cloth. Clean each rib separately without
touching the foam between the ribs.
You can also load and unload a sheet of paper 3 times or until clean.
Horizontal Smears on the Paper
Horizontal smears on the paper occur when the printheads touch the paper
and smear the image. In extreme conditions the customers print can look like
the image below where the printheads have actually come into contact with
the media and scraped off the ink. This problem can happen for different
reasons, and will mostly depend on the following factors:
The type of paper used
The printmode selected
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